Yeah I know, probably because I charge it so low I imagine. Higher charge rate = higher pack voltage has always been my experience. Its a super brain 977, which is/was good enough for what I needed it for, maybe not so much now. No way am I gonna hang around and wait for an 8000 charge at 2.5a. And yeah that pack has always taken more than 6000, first time I charged it after using it, I charged in two sessions and did a total of 6400 mah. Unless it's my charger being inaccurate about things. I can plug my pack into my charger and it will read Xv, and pop it on my friend's charger and it will read a little higher. So maybe my charger actually reads lower in voltage than it actually is, thus the 8.27v.